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<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Hi All,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I am defining custom chiller curves using the Energy Design
Resources HVAC Simulation guide, and I am trying to determine how to handle the
DESIGN-PLR keyword. The help function in eQUEST says that it is used to
differentiate between the “maximum” chiller capacity and the “design”
chiller capacity, and the example shown has the chiller specified at Design
Conditions rather than Rated Conditions. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>If I define custom chiller curves and specify a chiller at <u>Rated
Conditions</u> (SPECIFIED-AT is set to “Rated Conditions,” ELEC-INPUT-RATIO
and CAPACITY are defined at ARI Conditions, and custom chiller curves
normalized to ARI Conditions are used), should the DESIGN-PLR keyword be set to
1.0, meaning no further modification would take place to the chiller curves I
just created, or should DESIGN-PLR be set to an actual difference in Design vs.
ARI capacity, based on what the manufacturer says? This has a big swing
in energy savings, so I know that DESIGN-PLR does modify the chiller curves
somehow. The example indicates that this is used when SPECIFIED-AT is set
to “Design Conditions,” but I don’t know if it extends to “Rated
Conditions.”<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Any ideas? Thanks in advance.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Regards, <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><b><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial;font-weight:bold'>Matt Edwards LEED AP<br>
<br>
CRB Consulting Engineers<br>
</span></font></b><st1:Street w:st="on"><st1:address w:st="on"><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'>1 Kendall Square
Ste B17001</span></font></st1:address></st1:Street><o:p></o:p></p>
<p class=MsoNormal><st1:place w:st="on"><st1:City w:st="on"><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'>Cambridge</span></font></st1:City><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>, <st1:State
w:st="on">MA</st1:State> <st1:PostalCode w:st="on">02139</st1:PostalCode></span></font></st1:place><br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>Office#
617-475-3061<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Direct# 857-998-9321<br>
Email: <a href="mailto:matt.edwards2@crbusa.com"
title="mailto:matt.edwards@crbusa.com"><font size=3 face="Times New Roman"><span
style='font-size:12.0pt;font-family:"Times New Roman"'>matt.edwards2@crbusa.com</span></font></a></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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